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Finding the Fourth Proportional to 86,171.48, 118,836.40 and 55,924.48

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Solution

The fourth proportional to 86,171.48, 118,836.40 and 55,924.48 is: 77,123.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,171.48 : 118,836.40 = 55,924.48 : x
  2. Step 2: Convert to fraction form
    86,171.48/118,836.40 = 55,924.48/x
  3. Step 3: Cross multiply
    86,171.48x = 118,836.40 × 55,924.48
  4. Step 4: Simplify right side
    86,171.48x = 6,645,863,875.07
  5. Step 5: Solve for x
    x = 6,645,863,875.07/86,171.48
  6. Step 6: Final answer
    x = 77,123.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.